#include<bits/stdc++.h>
using namespace std;

int isprime(long long a){
    int ans=0;
    for(long long i=2;i*i<=a;i++){
        while(a%i==0){
            a/=i;
            ans++;
        }
    }
    if(a!=1) ans++;
    return ans;
}

int main(){
    long long N; cin >> N;
    if(isprime(N)<3){
        cout << "NO" << endl;
    }else cout << "YES" << endl;
}